— _____
— It's an apartment building.
A:What's your home?
B:Where's your house?
C:What kind of house do you live in?
D:Where's the home?
“我们可以在同一条数轴上表示两个不等式的解集,观察数轴,找出它们解集的公共部分,从而得到不等式组的解集”在这种解不等式组的方法中所体现出来的数学思想是( )
5680=____+600+____